How far is Sidney, MT from Great Falls, MT?
The driving distance from Sidney, MT to Great Falls, MT is about 376.1 miles (605.3 km), with a travel time of about 06h 09m by car.
- The straight-line flight distance is about 333 miles (535.9 km).
- For a round trip, plan for roughly 12h 19m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 06h 09m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in and the county seat of Garfield County, Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Sidney and Great Falls.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sidney and Great Falls.
-
1
Start on North Central Avenue
2.5 mi · 3 min · North Central Avenue
-
2
Enter the roundabout and take exit 2 toward the route
41 m · 2 sec
-
3
Exit the roundabout
48.9 mi · 56 min
-
4
Take the exit right
1385 ft · 34 sec
-
5
Merge slight left
1.4 mi · 1 min
-
6
Take the exit slight right
1434 ft · 36 sec
-
7
Turn right
217.9 mi · 3 hr 58 min
-
8
Continue straight
23.4 mi · 27 min
-
9
Turn right onto 1st Avenue North
1629 ft · 30 sec · 1st Avenue North
-
10
Continue on Truck Bypass
2.6 mi · 4 min · Truck Bypass
-
11
Continue on US Highway 87
14.7 mi · 16 min · US Highway 87
-
12
Continue straight
64.3 mi · 1 hr 10 min
-
13
Turn slight right
1588 ft · 21 sec
-
14
Enter the roundabout and take exit 2 toward the route
52 m · 2 sec
-
15
Exit the roundabout
557 ft · 7 sec
-
16
Continue straight
23.1 mi · 29 min
-
17
Turn right onto 6th Street South
1989 ft · 39 sec · 6th Street South
-
18
Turn left onto 5th Avenue South
864 ft · 40 sec · 5th Avenue South
-
19
Turn right onto 4th Street South
49 m · 7 sec · 4th Street South
-
20
Arrive at your destination
0 m · 1 sec · 4th Street South
Car Route Details
A richer read on the saved driving route between Sidney and Great Falls.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Longest stretch
Turn right
218 mi · 03h 58m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Mostly Clear leaving Sidney and Partly Sunny then Chance Rain Showers near Great Falls.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sidney to Great Falls?
The road trip is about 376.1 miles (605.3 km) and usually takes 06h 09m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Jordan is a useful midpoint, sitting about 199.9 miles from Sidney and 176.2 miles from Great Falls.
How much longer is the road route than the straight-line distance?
The direct path is about 333 miles (535.9 km), while the road route adds roughly 43.1 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 7:30 AM MDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $51.66 one way or $103.32 round trip. Estimated CO2 is about 117.9 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Clear around Sidney and Partly Sunny then Chance Rain Showers near Great Falls.
Stop Ideas Near Jordan
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Jordan.
Glasgow
Flight Path Map
This map shows the direct air route between Sidney and Great Falls. Straight-line distance: 333.02 mi (535.95 km).
#1 Sidney
City in Montana, United States
| Population | 6,297 |
| Coordinates | 47.7166800, -104.1563300 |
| Altitude | 594 |
| Country | United States |
#2 Great Falls
Town in Cascade County, Montana, United States
| Population | 58,353 |
| Coordinates | 47.5002400, -111.3008100 |
| Altitude | 1015 |
| Country | United States |
End: 4th Street South (-111.300848, 47.50024)
Estimated Travel Time
Distance: 605 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 31m |
| 40 mph (64.37 km/h) | 09h 24m |
| 50 mph (80.47 km/h) | 07h 31m |
| 60 mph (96.56 km/h) | 06h 16m |
| 70 mph (112.65 km/h) | 05h 22m |
| 80 mph (129 km/h) | 04h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $51.66 | $103.32 |
| Mid-grade | $4.23 | $56.15 | $112.29 |
| Premium | $4.55 | $60.37 | $120.73 |
| Diesel | $5.41 | $71.82 | $143.63 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Montana · Apr 15, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.